The Tara Brooch Discovery
A peasant woman and her sons were digging on Bettystown beach when they found a box buried in the sand. Inside was a brooch of cast and gilt silver, elaborately decorated with filigree panels, glass, enamel, and amber studs. It dates from the 8th century AD and represents the peak of early medieval Irish metalwork. A Dublin jeweller named George Waterhouse bought it and renamed it the "Tara Brooch" as a marketing ploy for selling copies during the Celtic Revival — despite having no connection to Tara. It is now preserved in the National Museum of Ireland and is one of Ireland's greatest treasures.